β‐MoO_3, the molybdenum oxide phase with the highest catalytic activity, is a promising material in optical, chemical, and electronics applications as a replacement for α‐MoO₃. α‐MoO₃ 1D nanostructures such as whiskers and fibers have been investigated and used in applications. However, difficulties in the synthesis of one‐dimensional β‐MoO₃ have obstructed researchers in the study of its properties. In this research, β‐MoO₃ nanowhiskers were synthesized from core/shell molybdenum/molybdenum oxide wires by pulsed wire discharge in mixed oxygen and argon gases. X‐ray diffraction analysis identified the main phase in the obtained samples as β‐MoO₃. Electron microscopy observations revealed whiskers with an average length and width of 216 nm and 23 nm, respectively. Transmission electron microscopy lattice imaging confirmed the successful synthesis of β‐MoO₃ nanowhiskers. Various models were considered to explain the formation of β‐MoO₃ nanowhiskers, including mechanical fragmentation of α‐MoO₃ layers as well as vapor‐liquid‐solid and vapor‐solid mechanisms. The phase transformation from α to β‐MoO₃ under a nucleation process was explained based on the Mo‐O phase diagram. To the best of our knowledge, this is the first report of β‐MoO₃ nanowhisker synthesis.

中文翻译：

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脉冲丝放电从核/壳钼/氧化钼丝合成β-MoO3纳米晶须

β-的MoO _3，具有最高的催化活性氧化钼相，是在光学，化学有前途的材料，和电子应用作为用于α-的MoO替换₃。α-的MoO ₃作为晶须和纤维进行了调查和在应用中使用的一维纳米结构，例如。然而，在一维β茂的合成困难₃在其性质的研究阻塞的研究人员。在这项研究中，β-的MoO ₃纳米晶须从核/壳钼/氧化钼导线通过脉冲放电丝在混合的氧和氩气合成。X射线衍射分析确定的主要阶段所得到的试样作为β-的MoO ₃。电子显微镜观察发现晶须的平均长度和宽度分别为216 nm和23 nm。透射电子显微镜的晶格成像证实β-的MoO成功合成_3个纳米晶须。各种模型被认为是解释β-的MoO形成_3个纳米晶须，包括α-的MoO机械碎裂₃层以及气-液-固和汽固体机制。相变从α到β-的MoO ₃下的成核过程进行了说明基于的MoO相图上。据我们所知，这是β茂的第一份报告₃纳米晶须合成。